Rotation of reciprocating spindles



(No Model.) 4 Sheets-Sheet 1 J. W. STRONG.

MECHANISM FOR. REVERSING ROTATION 0]? REGIPROGATING SPINDLES.

Patented Mar. 1, 18 87.

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(No Model.) 4 Sheets-Sheet 2.

J. WQSTRONQ. MECHANISM FOR RE'VERSING ROTATION OF REGIPROGATING SPINDLES. N0.358.795. Patented Mar. 1,1887.

N PETERS. P'IMD- -ifl ognphnr, Washington, D. C-

(No Model.) 4 Sheets-Sheet 3. J. STRONG. MECHANISM FOR REVERSING ROTATION 0F REGIPROOATING SPINDLES.

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Patented Mar. 1, 1887.

$7 mww/zzm )t PETERSv Pholo-Ulmgnphw. Washington. D. O.

UNITED dramas PATENT J hrice.

JOHN W. STRONG, OF BEIDGEPORT, CONNECTICUT, ASSIGNOR TO THE EATON, COLE 8o BURNHAM OOMPANE OF SAME PLACE.

MECHANISM FOR REVERSING ROTATION 0F RECIPROCATING SPINDLES.

SPECIFICATION forming part of Letters Patent No. 358,795, dated March 1, 1887.

Application filed July 3, 1886. Serial No. 207,053. (No model.)

To all whom it may concern.-

Be it known that I, JOHN WV. STRONG, a citizen of the United States, residing at Bridgeport, in the countyof Fairficld and State of Connecticut, have invented certain new and useful Improvements in Shipping Mechanism; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain improvements in shipping mechanism for tapping-machines, and for other machines where an automatic reversal of movement is found conven ient, and has for its object to provide a device for this purpose which shall be both simple and positive in its action; and with this end in View my invention consists in the details of construction hereinafter fully set forth, and then recited in the claims.

In order that those skilled in the art to which my invention appertains may fully understand how to make and use my improvement, I will describe the same in detail, referring by letter to the accompanying drawings, which, form a part of this specification, and in which-- Figure 1 is a side elevation of a tapping-machine, showing my invention attached thereto; Fig. 2, a plan view; Fig. 3, a transverse vertical section at the line at m of Fig. .2; and Fig. 4., a view similar to Fig. 1, but showing the position of the parts after reversing.

Similar letters denote like parts in all the figures of the drawings.

A is the open frame-work or bed of a tap ping-machine, and B are standards projecting upward therefrom.

Ois the tap-shaft, whose rear end is threaded, as at 1), through one of the standards. It is extended through and has a bearing in the other standard.

E is the di-ivingshaft, which is journaled in the two standards aforesaid. Rigid thereon is a long gear, F, which meshes with gear G, which is secured upon shaft 0.

H I are coned hub-driving pulleys revolvi'ng loosely upon shaft E and driven in opposite directions by means of belts. (See Fig.

leys and splined to the shaft, as seen at Fig. 3. The ends ofthe clutch are coned inwardly, and by movement thereof into contact with the cones on the pulleys the shaft E may be rotated in either direction. When the clutch is in engagement with neither pulley, the machine is still and the pulleys revolveidly on the shaft.

. K is a grooved collar secured upon the tapshaft.

L is a lever whose lower end is pivoted to the framework, and whose upper end carries a shoe which rests within the groove of the collar K.

M is the reversing-lever, which is pivoted to' a downward extension from the frame. itis slotted at an angle to its length.

O is arock-shaft journaled transverse of the machine beneath the clutch. An upwardlyextending arm, P, therefrom carries a yoke, which has studs or rolls engaging with the groove in the clutch, A lever, Q, secured upon the outer end of rock-shaft O, carries a stud, which projects through the slot in the reversing-lever.

It is a rod pivoted to lever L. Ithas a sliding bearing in an open stud, S, secured to the reversing-lever. Between the open stud and a, collar, '1, on said rod is confined a spiral spring, U, whose action will be presently ex plained.

V is a rod, which slides in bearings at the side of the machine. A spiral spring, W, is coiled about the rod, and is confined between one of the bearings and a collar.

X is a tappet projecting downwardly from the rod V, and the rod R passes through. a slot therein.

Y is a trip-lever pivoted to the frame. Its end is engaged by the lever Q, and the extremity of the rod V is pivoted toit. An adjustable rod, Z, on the rod V limits. the longitudinal movement of the latter.

A is the tap secured upon its shaft.

13 is the tappetcollar adjustable on the rod It.

The operation of my invention is as follows: Vhen the operation of tapping is about to commence, the parts of the machine are in the AtN 2.) J is the clutch arranged between said pul- 5o position shown at Fig.1-that is, the clutch is in engagement with the pulley H, and is held in contact therewith through the rockshaft, the upwardly-projecting arm thereof, and the lever Q,whosestud slides in the groove of the reversing-lever, and whose extremity engages with.the end of the triplever. In starting the machine the rotation of the driving-shaft is communicated to the tap-shaft through the gears, and the threaded bearing of the tap-shaft in the standard moves the tap forward with a regular movement. As the collar K moves forward with the shaft it carries the upper end of the lever L with it and causes said lever to turn upon its pivotal point. This pushes the rod It forward and compresses the spring U between the collar T and the open stud S on the reversing-lever. The forward motion of the rod continues until the tappet-collar B engages with and carries along the tappet X,whicl1 takes the triplever out of engagement with the lever Q. The spring U, which has been compressed, as above set forth, now throws the lever M forward upon its pivotal point. As it so moves, the lever Q, by the sliding of the stud in the inclined slot N, is turned to the position shown at Fig. 4. This operation throws the clutch from engagement with the forward to the backward driving-pulley and reverses the machine. The position of all the parts at this time is clearly shown at Fig. 4.

By adjustment of the collar B on the rod R the depth of entrance of the tap may be certainly determined and the reverse movement effected at the proper time. When the limit of backward movement is 1'eached;the parts are returned to I position for commencing a new operation, as at Fig. 1, by swinging back the reversing-lever. .This lets the tripflever into engagement with the lever Q, and the forward movement is recommeneed.

The machine may be reversed at any time independent of the automatic shipping mechanism by throwing the trip-lever out of engagement and throwing over the reversing lever by hand. 4

While my improvement is particularly adapted for use upon tapping-machines, it can be most advantageously employed upon almost any machine in which automatic reversing is expedient.

I do not wish to be confined in my invention to the exact details of construction which have been herein shown and described, since many minor changes not affecting the action of the parts may be made without departing from the spirit of my invention.

Having thus described my improvement, what I claim as new, and desire to secure by Letters Patent, is- I 1. The combination, with a suitable frictionclutch and pulleys, whereby power is transmitted to the machine, of the tap-shaft, the pivoted lever controlled by the movement of said shaft, the rod secured to said lever, the adjustable collar thereon, the spring coiled about said rod,,the pivoted and slotted reversing-lever, the pivoted trip-lever and its tappet, and the rock-shaft and its connections 7 both to the clutch and to the reversing lever, substantially as set forth.

2. The combination, with the lever carried upon its pivotal point by the tap-shaft, of the slotted reversing-lever and its connection to the friction-clutch, the rod having collars thereon, and a spring abutting against a stud upon the reversing-lever, and the tappet-carrying and spring-controlled rod, and the pivoted trip-lever connected therewith, all arranged as described, and for the purpose set forth.

3. The combination, with the tap shaft screw-threaded through one of the standards, of the friction-clutch and pulleys, the arm, rock-shaft, and lever, whereby the clutch is operated, the slotted reversing-lever adapted to control the rock-lever Q, the pivoted lever whose upper end is carried by the tap-shaft, the pivoted trip-lever, and the rod, spring-collars, tappet-rod, and tappet, whereby the triplever is disengaged from the lever Q, substantially as set forth.

4. The combination, with the slotted reversing-lever and its connection to the clutch, of the pivoted lever carried by the tap-shaft, the pivoted trip-lever, and the tappet-rod and tappet connected therewith, the rod extending from the lever L, the spring thereon,whereby the overthrowing of the reversing-lever is effected, and the adjustable collar secured thereto, adapted to engage the tappet and thereby withdraw the trip-lever from its engagement with the lever Q, substantially as set forth.

5. In combination, the obliquely-slotted reversing'l'ever and its connection to the clutch, the spring-controlled tappet-rod, tappet, and pivoted trip-lever, the lever carried by the tap-shaft, the rod secured to said lever, the spring around the rod and bearing against the reversing lever, and the adjustable collar, whereby the trip-lever is drawn out of engagement and the spring permitted to throw over the reversing-lever, substantially as set forth.

6. The combination of the tap-shaft screwthreaded through the standard, the collar K thereon, the pivoted lever L engaging with the collar, the pulleys and friction-clutch on the driving-shaft, the pivoted reversing-lever obliquely slotted, the rock-shaft and its lever and arm, whereby the reversing-lever is con nected to the clutch, the rod connected to lever L, the spring around the rod and bearing against the reversing-lever, the pivoted triplever and the tappet-carrying rod spring-controlled and connected thereto, the tappet, and the adjustable collar on the rod R, whereby the trip-lever is withdrawn out of its engagement and the action of the spring upon the reversing-lever permitted, substantially as set forth.

'7. The combination, with the tap-shaft, the driving shaft, and means for reversing the out of its normal engagement, substantially as 10 set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN V. STRONG.

by the rod R, whereby thetrip-lever is carried 1 S. S. WILLIAMSON. 

